Donald takes control in Tuscon

England's Luke Donald played an almost faultless front nine in his WGC-Accenture Match Play Championship quarter-final with Ryan Moore in Tucson.

Donald, looking to win his first tournament in America for five years and with it move to number three in the world, was four up after the first nine holes, having picked up shots on his opponent on the first, third, sixth, eighth and ninth holes, with Moore winning one back on the fourth.